Combination lock mechanism



Nov. 26, 1929. o. J. SCHMIDT 1,737,477

COMBINATI ON LOCK MECHANISM Filed July 20, 1927 INVENTOR. 006a 7 cfej'fiimzz'af.

BY I

A TTORNE Y.

Patented Nov. 26, 1929 UNITED STATES OSCAR J. SCHMIDT, OF ELMHURST, NEW YORK COMBINATION LOCK MECHANISM Application filed. July 20, 1927.

This invention relates to certain new and useful improvements in combination lock mechanism and has for its primary object to provide a pair of sliding bolts or rods connected together and movable in unison to be controlled by permutation disk members, the

rods functioning as retaining means for a shackle or as lock bolts.

A further object of the invention is to simplify lock constructions of the above type embodying comparatively few parts to lessen the cost of manufacture and being of a general construction possessing great strength.

WVith the bove and other objects in view that will become apparent as the nature of the invention is better understood, the same consists in the novel form, combination and arrangement of parts hereinafter more fully described, shown in the accompanying drawings and claimed.

In the drawings, wherein like reference characters indicate corresponding parts throughout the several views,

Figure 1 is a side elevational View of a combination lock device constructed in accordance with the present invention, the lock being illustrated as of the shackle type;

Figure 2 is a vertical longitudinal sectional view of the lock device shown in Figure 1 with the two legs of the shackle retained in the lock body by the tumbler controlled sliding bolts that are connected together for simultaneous movement;

Figure 3 is an end elevational view of the lock showing the connecting bar for the two shackle retaining bolts;

Figure 41 is a vertical cross-sectional view taken on line H of Figure 1 showing the disk tumblers supported on the retaining bolts for the shackle.

The invention as shown in Figures 1 to 41 which illustrates combination lock mechanism for a lock of the shackle type, the reference numeral 1 designates the body portion of the lock which is in the form of a solid block.

One end of body 1 has a relatively long recess 2 opening at one end while the other end of the body has a relatively short recess 3 opening at the same end to receive the long and short legs 4 and 5 respectively of the Serial No. 207,271.

shackle 6. The outer side of the long shackle leg 4 is recessed as at 7 intermediate the ends thereof and over a length that is confined within the body and into which recess portion 7, the screw'S carried by the lock body extends for limiting sliding movement of the shackle.

T he mechanism for retaining the shackle in a locked condition with both ends of the legs confined within the lock body comprised a pair of bolts connected together for simultaneous movement and controlled in their operation by permutation tumblers, the bolts 9 and 10 being longitudinally slidable, respectively, in the openings 11 and 12 extending longitudinally of the lock body. The Y outer ends of the bolts 9 and 10 are connected by the cross head 13 that carries a handle 14. The bolt 10 is notched adjacent one end as at 15 to receive the pin 16 extending through the body of the lock for limiting sliding movef ment of the bolt. The inner end of the shackle leg at is provided with aside notch 17 to receive the tapered end 10 of the bolt 10. The outer side of the inner end of the short leg-'5 of the shackle is similarly notched as at 18 to receive the projecting tapered stud 13 upon the extended adjacent end of the cross-head 13. With the parts of the lock mechanism so engaged, the shackle 6 is retained in its locked condition with respect to the body 1 and to ob tain this result, permutation disk tumblers are associated with the body and lock bolts.

The body 1 of the lock is provided with a series of spaced transversely extending openings 19 that traverse the bolt openings 11 and 12. A disk tumbler 20 is received in each opening 19 and is aiiially supported upon the bolt. Each disk tumbler 20 has a radial opening 21 that is of a size to permit passage therethrough of the lug 22 upon the associated bolts 9 or 10. Permutation characters 23 are provided on the peripheral faces of the disk tumblers 20 and cooperate with marks 25 upon the lock body for determining when the several radial openings 21 in the disk tumblers are alined with the lugs 22 upon the respective bolts 9 or 10. hen the disk tumblers are properly positioned, to permit sliding movement of bolts 9 and 10, the handle 14 is grasped and the bolt moved away from the legs of the shackle to free the latter. By the provision of the two bolts that are connected together for simultaneous operation and With separate disk tumblers associated With each bolt, it is possible to obtain a Wide range of combinations for effecting the release of the lock.

While there is herein shown and described the preferred embodiment of the present invention, it is nevertheless to be understood that minor changes may be made therein Without departing from the spirit and scope of the invention as claimed.

What I claim as new is In lock mechanism of the character described, a lock body, rigidly connected lock bolts slidable therein, permutation tumblers controlling movement of the sliding bolts, a sliding shackle having the legs thereof received in the lock body, and engaging means between the lock bolts and shackle legs for retaining the shackle legs in the lock body.

In testimony whereof I afiix my signature.

OSCAR J. SCHMIDT. 

